General Formatting/CSS Updates

Updated CSS based on content on staging site, used a DW template to
mock up pages.

Changes to the markup:

Sidebar
-Added "button" class to "More Events" and "More News"
-Added <p> around "button" to format

Calendar
- Defined cellpadding and cellspacing on table (inline)
Abbrevated days of week
- Switched characters for "next" and "previous" to &#9756; and &#9758;